| Chalco to Popovo | 5,586.29 mi (8,990.27 km) |
| Chalco to Provadia | 5,633.73 mi (9,066.61 km) |
| Chalco to Radnevo | 5,631.97 mi (9,063.79 km) |
| Chalco to Radomir | 5,519.05 mi (8,882.05 km) |
| Chalco to Rakitovo | 5,586.79 mi (8,991.07 km) |
| Chalco to Rakovski | 5,600.50 mi (9,013.14 km) |
| Chalco to Razgrad | 5,585.73 mi (8,989.36 km) |
| Chalco to Razlog | 5,571.03 mi (8,965.70 km) |
| Chalco to Ruse | 5,552.30 mi (8,935.56 km) |
| Chalco to Samokov | 5,550.57 mi (8,932.79 km) |
| Chalco to Sandanski | 5,581.00 mi (8,981.76 km) |
| Chalco to Sevlievo | 5,566.79 mi (8,958.89 km) |
| Chalco to Shumen | 5,612.39 mi (9,032.26 km) |
| Chalco to Silistra | 5,578.41 mi (8,977.59 km) |
| Chalco to Sliven | 5,624.82 mi (9,052.27 km) |
